Could It really be

Ok, I’m not sure if I’m just hopeful or over thinking but I need advice. My periods have always been spot on we’ll give or take a day or 2 but my body had the same AF symptoms every month. I was supposed to start on the 3/4 of this month and its now what would have been the last day of my period but NOTHING came. If I calculated right I’m 18/20DPO I have sporadic mild cramping, really sore nipples, sporadic nausea, really thirsty, and I always feel happy yet cry randomly & also I feel full all the time yet craving something but don’t know what. Usually I’m a Biotch 5days before my period and get mild cramps the morning before my period but haven’t had either. Some people say you have spotting from implication but and this may be TMI but I usually go commando until the day before my expected period so idk if I had any. Maybe I’m just hyper sensitive but I think I may be pregnant finally. I’m going to wait another week just in case but what do you think?